Results 11 to 20 of about 17,427 (311)
Signal-coil calibration of electromagnetic seismometers [PDF]
Bulletin of the Seismological Society of America, 1995 AbstractWe show that electromagnetic (em) seismometers may be easily and accurately calibrated by removing a step of current from their signal coil, and simultaneously switching the signal coil to a recorder to capture the response. A theory is developed that obtains the damped generator constant, resonant frequency, and damping ratio from the output ...
Peter W. Rodgers +4 more
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Research of changes in electromagnetic parameters in controlled asynchronous special electric drives
Омский научный вестник, 2023 The article researches the changes in the electromagnetic parameters of controlled asynchronous special electric drives. Special asynchronous electric drives are controlled cascade electric drives of cylindrical and axial designs.
V. Yu. Karandey +3 more
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A novel type coil-multipole field hybrid electromagnetic launching system
Results in Physics, 2019 This paper describes the concept of a Coil-Multipole Field Hybrid Electromagnetic Launcher. The electrical and magnetic equivalent circuits of coil gun and multipole field electromagnetic launch system (MFELS) are discussed. An attempt is made to analyze
Sri Chandan Kondamudi +5 more
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IEEE Access, 2020 In the conventional electromagnetic tube expansion, axial distribution of the electromagnetic force is not uniform along the workpiece. This results in uneven axial deformation of the deformed tube and restricts the full industrial implementation of this
Li Qiu +5 more
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Applied Sciences, 2022 In this paper, the structural characteristics of electromagnetic suspension (EMS) inertial stabilizers are analyzed firstly, and then a mechanical analysis of a single mass block and double mass block is carried out.
Sumei Gao, Longxiang Xu, Chaowu Jin
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Coil Gun Electromagnetic Launcher (EML) System with Multi-stage Electromagnetic Coils
Journal of Magnetics, 2013 An electromagnetic launcher (EML) system accelerates and launches a projectile by converting electric energy into kinetic energy. There are two types of EML systems under development: the rail gun and the coil gun. A railgun comprises a pair of parallel conducting rails, along which a sliding armature is accelerated by the electromagnetic effects of a ...
Su-Jeong Lee +3 more
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The Impact of Coil Winding Angle on the Force of DC Solenoid Electromagnetic Actuator
Advances in Electrical and Electronic Engineering, 2019 This paper presents the research on the influence of coil parameter on the force of DC electromagnetic actuator. The coil parameter discussed in the paper is the angle between the windings.
Eduard Plavec +2 more
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Opening characteristics of high current fast switch for DC circuit breaker
电力工程技术, 2023 The stability of opening process of fast mechanical switch is the key factor affecting the breaking performance of DC circuit breaker. Based on the finite element method, the multi-field coupling calculation of electromagnetic, thermal and momentum is ...
LAN Jian, FENG Ying, WANG Chengyu
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IEEE Access, 2020 Tube electromagnetic bulging has been given much attention due to its superior advantages in the field of light alloy processing. However, the conventional tube electromagnetic bulging process exhibits some critical issues that restrict its wide ...
Li Qiu +7 more
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Journal of Experimental Nanoscience, 2023 As the basic unit structure of electromagnetic metamaterial, the structure size of open resonant ring directly determines the constitutive parameters of SRR (dielectric constant ε and permeability μ). In order to improve the energy exchange efficiency of
Sheng Bi
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